Feank ehind



F. RHIND.

(No Model.)

LAMP.

Patented Feb. 8, '1887.y

N, PETERS, Phot r. Walhnginn, ILC.

Nirnn S'rarnsV FRANK RHIND, OF MERIDEN, CONNECTICUT, ASSIGNOR TO EDVARD MILLER dt COMPANY, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 357,412I dated February 8, i887.

Applicaticn led September 27, 1886. Serial No. 214,620. (No model.)

To all whom, it may concern:

Be it known that I, FRANK RHIND, ofMeriden, in the county of New Haven and State of Connecticut, have invented a 4new Improvement in Lamps; and I do hereby declare the following, when taken inconnection with accompanying drawings and the letters of reference marked thereon, to bea full, clear, and exact description of the same, and which said drawings constitute part of this specicatiom' and represent, in

Figure l, a sectional side view of a studentlamp illustrating the invention. Figs. 2 and 3 are modifications.

This Ainvention relates to an improvement in the class of lamps in which the fount is made separate from the wick-chamber, and in which a conductor leads the oil from the fount to the wick-chamber-such, for illustration, asthatcommonlyknown as student-lamps.

The object of my invention is such a con-x struction of glass-lamp fount as will prevent the possibility of leakage.

In the accompanying illustration I show a student-lamp in which A is the base; B, the

` standard upon which the slide C is arranged,

and through which the connecting-tube D eX- tends in the usual manner, and carrying the wick-chamber E at one end, on one side ofthe upright, and the fount on the opposite side.

I make the body .ofthe fount F of glass, its bottom open, preferably nearly the full diameter of the fount.l The outline of the fount may be to suit the tastes of the manufacturer or the demands of the trade. Around the lower edge of the -fount is a flange, G, the periphery of which gradually contracts from the extreme lower edge upto a shoulder, I, as shown. The top J of the fount may be of glass, integral with the side or body of the fount, and is best made with a central fillingopening, K.

rlhe bottom L of the fount is made from metal, with a central depression, M, which forms a cavity in the bottom of the fount. Around the outer edge of the bottom andupon the upper side a groove is formed to receive the ange G, the bottom being made from sheet metal. The bend in the metal to make the groove may be so as to give an ornamental shape to the exterior of the metal, as shown. The groove is of considerably larger extent than the liange G, and so as to leave a space upon both sides ofthe iiange G. This groove is filled with acement that is proof against t-he action ot' kerosene, as in Patent No. 342,463, granted to me May 25, 1886, a representing the cement. The diameter ofthe liange oontracting, as before described, makes it of a dovetail shape, so that as the cement hardens the flange becomes interlocked through the cement with the bottom. IThe side of the groove in the bottom is made ot an irregular shape, sothat the cement interlooks with the bottom, and after the cement Iis set separation of the fount and bot-tom is impossible.

The conductor D enters the depression M in the bottom, and a metallic connection is there made, thus readily permitting a metal `joint, through which the oil cannot pass; Preferably the fount is covered with ametal cap, N,

Vwhich also serves to close the filling-opening K.

I have represented the depression M in the bottom as of cup shape and made integral with the bottom; but the conductor D itself may form the depression in the bottom, into which the oil will pass from the fount, as seen in Fig. 2.

While I prefer to construct the ilange inclined to the aXis ofthe fount, as I haveillustrated, it may be otherwise constructed to interlock with the eement-say as seen in Fig. 3-i`t only being essential that the flange shall present an annular interlocking surface, with which the cement will engage.

From the foregoing it will be understood that I do not claim,broadly, a glass fount having a metal bottom attached thereto by a cement impervious to oil; but

What I do claim is- A lamp-fount the bodyF of which is made from glass and with its bottom open, and oonstructed with a flange, G, around its lower edge, presenti-ng an annular interlocking surface, combined with a metal bottom, L, having a depression therein7 from' which the conin said groove, and whereby the bottom and ductorD leads to the wick-chamber, and with fount are interlooked, substantially as dea groove near its outer edge adapted to rescribed.

ceive the said flange G of the body, the said groove also constructed to present an interior interlocking surface, the said ange of the fount embedded in cement impervious to oil FRANK RHIN D. Witnesses:

GEO. L. COOPER, W. H. BRECKENRIDGE. 

